What was constitutional convention supposed to meet and what did they do instead?

The Constitutional Convention was originally convened in May 1787 to address the weaknesses of the Articles of Confederation and to revise the existing governmental framework. However, delegates quickly decided to create an entirely new Constitution, resulting in the establishment of a stronger federal government. Over the course of several months, they debated and crafted a document that included a system of checks and balances and delineated the powers of the different branches of government. The outcome was the United States Constitution, which was ratified in 1788.